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remove the air cleaner assembly,then unscrew the 2 threaded bolts, should be 8mm head visable once air cleaner removed. disconnect fuel pipe,choke and throttle linkeges and backlash spring
Not sure what you mean by 'run'. Engine needs fuel, spark and air to run. And the fuel has to be in an exact proportion to the air. Air is easy, temporarily remove the air filter. Fuel is tougher - I would recommend you get starting fluid and spray down the carb (now that you have air cleaner removed). Spark is toughest. There are some tools that can verify there is a spark and there are some more expensive tools to verify the strength of the spark. If you have spark, the engine should at least fire up. If the engine dies a few seconds later, you don't have fuel flow. Carburetor is still not working. Is the carburetor fuel bowl full of gasoline? If not, check filter and needle and seat. If you have fuel, make sure the jets are clean. The carb sucks fuel out of the bowl via jets. This empties into the carb's venturi (the throat). Take spray cleaner and spray down the little passage in the throat (not into the engine) and you should see the cleaner spray into the fuel bowl. If not, try spraying through the jets and watch the spray come into the venturi. When air enters the engine, it causes a vacuum that sucks the fuel out. This is physics. The only way it doesn't work is if there is a clog in the system.
Run it minus an air filter until all the oil is off your piston head, you can also try keeping the plug out and ejecting the oil via that access by pulling the cord. It seems like you've already solved the problem, now you're just cleaning up.
That being the case...your miss is fuel related. Your mix is too rich..(too much gas...lack of air)...as the tank empties, your mix will lean out, basically telling you what the problem is. I recommend that you first clean the air filter, as this can cause the engine to **** too much gas. After cleaning, if you can tell no difference, the next step would be to adust the car...(air bleed). If this doesn't work, remove the carb soak in carb cleaner, blow out with compressed air, and install a new carb kit, (seals gaskets, and new seat if equipt with a needle valve and float. Good Luck! I hope you find this to be very helpful!
some have fuel filter some do not , but it sounds like you have contaminated fuel and is is clogging up fuel line or carburetor,look into gas tank with a flash light and see if there are specs floating at bottom of the tank, if there are drain tank of all gas and remove tank and flush it out with brake cleaner, then disconnect both ends of fuel line and spray through tube into white paper towel until u see no dirt/debris. then remove air filter clean foam( soapy water, dry re-oil 10w30 is ok). remove carb from engine spray through main port with carb cleaner not brake cleaner, and use tube and spray through inlet tube while holding throttle wide open reassemble and it should run fine, if not u may need to disassemble carb if not comfortable with this then order new one usually under $100
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